Can anyone recommend a good hitch-mount bike rack that would fit three 30-50 pound bikes?

@lattera This has served the five is well and note that a “rack for three bikes” assumes really-narrow bikes.

https://www.uhaul.com/MovingSupplies/Bike-Ski-Racks-Ramps/Curt-Tapered-Dual-Arm-5-Bike-Rack/?id=18245

@dexter Thanks! $200 USD isn't a bad price, either. :-)
@lattera I got a Thule from U-Haul. It was not the cheapest but it is well made. The model I have holds 4 bikes. The are two models; the basic goes from hitch to the bike rack. The advanced one has a hinge to allow you to open the back of your vehicle with the bikes still attached